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Diodes Incorporated AP2011SL-13
- Part No.:
- AP2011SL-13
- Manufacturer:
- Diodes Incorporated
- Category:
- DC DC Switching Controllers
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AP2011SL-13.pdf
- Description:
- IC REG CTRLR BUCK 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,610
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Product details
Overview
AP2011SL-13 from Anachip Corp is a synchronous voltage-mode PWM controller with Virtual Frequency Control™, designed for high-efficiency buck converters powering microprocessor cores and VRMs. It operates from 10V to 40V input, delivers 1.25V ±2% reference, integrates 200kHz virtual oscillator, and supports P+N MOSFET drive in SOP-14L package for telecom and networking power supplies.
For engineers reviewing the AP2011SL-13 datasheet, AP2011SL-13 pinout, AP2011SL-13 application, or AP2011SL-13 equivalent, key selection criteria include its VFC-based transient response, integrated current limit via OCSET pin, soft-start/shutdown control on SS/SHDN, and dual-gate drive capability for synchronous buck topologies without external compensation.
Technical Context
The AP2011SL-13 implements voltage-mode control with a 200kHz internal virtual frequency oscillator, enabling fixed-frequency operation while retaining fast transient response through pulse-by-pulse duty-cycle adjustment (0–100%). Its error amplifier features 60dB gain and 0.2µA input bias, referenced to a trimmed 1.25V bandgap.
It integrates level-shifted high-side (PGATE/PDRV) and low-side (NGATE) gate drivers, cross-current protection, under-voltage lockout (6.5V/6.8V hysteresis), and cycle-by-cycle overcurrent detection triggered by PHASE-to-OCSET comparison during high-side conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 10V to 40V - supports wide-input industrial and telecom DC bus rails without pre-regulation |
| Reference Voltage | 1.25V ±2% - sets output accuracy for feedback networks in VRM and core supply designs |
| Virtual Oscillator | 200kHz - enables stable switching frequency with minimal external components and no loop compensation |
| Current Limit Threshold | Set by OCSET pin sink current (70µA) - allows precise, resistor-programmable overcurrent trip point |
| Soft-Start Control | SS/SHDN pin sources 10µA / sinks 2µA - provides adjustable ramp-up time and hiccup-mode fault recovery |
| UVLO Thresholds | VCC UVLO: 6.5V (falling), 6.8V (rising) - prevents erratic startup and ensures clean enable/disable sequencing |
| Operating Temp | −40°C to +85°C - qualified for industrial ambient conditions in embedded and network equipment |
Pinout & Package
SOP-14L (Small Outline Package, 14-pin, lead-free), 8.64mm × 6.00mm body, 1.27mm pitch, 1.60mm height - surface-mount compatible with standard reflow profiles and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGATE | High-side P-MOSFET gate driver output | Level-shifted output capable of driving P-channel high-side switch directly; includes shoot-through protection |
| VCC | Internal regulator input | Powers internal circuitry; regulated 8.5V output supplied to other pins; not for external sourcing |
| PVCC | Power supply for high-side driver | Bypassed externally to reduce noise on high-side gate drive path; decoupling critical for stability |
| PDRV | P-MOSFET gate driver control | Complementary signal to PGATE; used with external P-MOSFET in synchronous buck configuration |
| PGND | Power ground return | Separate ground for high-current power paths; must be routed separately from SGND to minimize noise coupling |
| NGATE | Low-side N-MOSFET gate driver output | Direct drive for N-channel synchronous rectifier; complements PGATE with dead-time control (100–250ns) |
| VIN | Main IC supply input | Primary power input (10–40V); powers internal regulator and logic; requires local ceramic bypass |
| CAP | Charge pump capacitor terminal | Connects external capacitor to generate boosted voltage for high-side gate drive in P-MOSFET configurations |
| SS/SHDN | Soft-start timing / shutdown control | Capacitor-connected pin for programmable startup ramp; pulled low disables operation |
| FB | Feedback input | Inverting input of error amplifier; connected to resistive divider from output to set regulated voltage |
| OCSET | Overcurrent threshold setting | 70µA internal current sink sets trip point via external resistor; compared to PHASE during high-side on-time |
| SGND | Signal ground reference | Analog ground for FB, OCSET, VREF, and error amp; must be star-connected to avoid noise injection |
| PHASE | Switch node sensing | Monitors buck converter phase node between MOSFETs; used for current limit detection and timing reference |
| VREF | 1.25V reference output | Stable, temperature-compensated bandgap reference; usable as precision bias or secondary feedback source |
Key Features
| Feature | Design Value |
|---|---|
| Virtual Frequency Control™ | Enables constant 200kHz operation with adaptive off-time for fast load transients-no external compensation required |
| Synchronous P+N Drive | Integrated high-side P-MOSFET and low-side N-MOSFET gate drivers eliminate need for external level shifters or bootstrap circuits |
| Programmable Current Limit | Resistor-set overcurrent threshold via OCSET pin with automatic hiccup-mode recovery on fault |
| Soft-Start & Shutdown | Single-pin (SS/SHDN) control for adjustable ramp-up time and logic-level disable function |
| Under-Voltage Lockout | Hysteresis-controlled enable (6.5V/6.8V) prevents brown-out operation and ensures reliable power sequencing |
Applications
| Microprocessor Core Supply | Voltage Regulator Module (VRM) |
|---|---|
Use Scenario: Providing tightly regulated 1.2V–3.3V DC power to Intel/AMD CPU cores in desktop and server motherboards. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing dynamic VID transitions, phase interleaving readiness, and fast load-step response. Use Value: 200kHz VFC operation maintains regulation during 10A/µs load transients while minimizing output capacitance and board area. | Use Scenario: Building modular, multi-rail DC/DC solutions for FPGA, ASIC, and SoC power domains in telecom base stations. IC Role / Device Role / Timing Role: Standalone VRM controller implementing single-phase buck conversion with programmable current limit and sequencing support. Use Value: SOP-14L footprint and minimal external parts (no compensation network) reduce BOM cost and layout complexity in space-constrained modules. |
| Networking Power Supply | Telecom Power Supply |
Use Scenario: Generating intermediate 5V/3.3V rails for Ethernet switches, routers, and PoE injectors operating from 24V/48V backplanes. IC Role / Device Role / Timing Role: High-efficiency primary controller enabling >90% efficiency at full load with low thermal footprint. Use Value: Synchronous P+N drive eliminates heat sink requirement in sealed enclosures; UVLO ensures clean startup during brownout conditions. | Use Scenario: Powering line cards and DSP subsystems in carrier-grade telecom equipment requiring −40°C to +85°C operation. IC Role / Device Role / Timing Role: Industrial-grade PWM controller supporting sequenced power-up and robust fault management in redundant power systems. Use Value: Hiccup-mode overcurrent protection and soft-start coordination prevent system reset during hot-swap events or short-circuit faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| APW7120BI-TRG | Fixed 300kHz frequency; no VFC; requires external compensation; supports only N+N MOSFETs | Lacks PHASE-sense current limit and hiccup recovery; optimized for lower-cost, non-VRM applications | Select when fixed frequency and N+N topology simplify design, and transient response requirements are less stringent |
| RT8205AZSP | Integrated 5V LDO for gate drive; 600kHz switching; supports only N+N; no VFC or OCSET pin | Higher integration but no programmable current limit or soft-start flexibility; targets compact consumer power | Choose for space-constrained consumer designs where 5V auxiliary rail simplifies layout and VFC is unnecessary |
Compared with AP2011SL-13, APW7120BI-TRG offers simpler compensation but lacks VFC's transient agility and PHASE-based current sensing, while RT8205AZSP trades configurability for higher integration-making AP2011SL-13 optimal for VRM-grade efficiency and robustness where design flexibility matters.
Availability
AP2011SL-13 is available at Aetrix Electronics and suitable for microprocessor core supplies, voltage regulator modules (VRMs), and telecom power supplies requiring stable component supply across extended production lifecycles.
Supply support for AP2011SL-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Anachip Corp is a Taiwan-based fabless semiconductor company specializing in analog and mixed-signal power management ICs for industrial, computing, and communications markets.
The AP2011 product line delivers cost-optimized synchronous buck controllers targeting VRM-compliant microprocessor power delivery with emphasis on efficiency, thermal performance, and minimal external component count.
FAQ
What is the purpose of the CAP pin on the AP2011SL-13?
The CAP pin connects to an external charge-pump capacitor that generates a boosted voltage for driving the high-side P-MOSFET gate above VIN. This enables full enhancement of the P-channel device without requiring a bootstrap diode or external high-voltage supply, simplifying layout and improving reliability in synchronous buck topologies.
How does the OCSET pin implement overcurrent protection?
The OCSET pin sinks a precise 70µA current; an external resistor from VCC to OCSET sets a voltage threshold. During high-side conduction, the PHASE node voltage is compared to this threshold. If PHASE falls below it-indicating excessive current-the controller initiates hiccup-mode soft-start recovery to protect the power stage.
Can the AP2011SL-13 operate with only N-channel MOSFETs?
No-the AP2011SL-13 is specifically designed for P+N synchronous buck topologies. Its PGATE and PDRV outputs are optimized for P-channel high-side switches. Using N-channel devices on the high side would require external level-shifting circuitry not supported by the internal driver architecture.
What is the significance of "Not Recommended for New Designs" in the datasheet?
This designation indicates Anachip has discontinued active development and long-term supply commitment for the AP2011 series. While functional and available through distribution channels, new designs should consider newer-generation alternatives with enhanced features, improved efficiency, or extended lifecycle support.
AP2011SL-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Type:
- Transistor Driver
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 10V ~ 40V
- Frequency - Switching:
- 200kHz
- Duty Cycle (Max):
- 85%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable, Phase Control, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOP
AP2011SL-13 FAQ
1.How can I place an order for AP2011SL-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP2011SL-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP2011SL-13 reliable?
The price and inventory of AP2011SL-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP2011SL-13 is usually 5 days.
3.What payment methods are accepted for AP2011SL-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP2011SL-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP2011SL-13?
AP2011SL-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP2011SL-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP2011SL-13?
For technical support, including AP2011SL-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP2011SL-13 requirements.
6.How does Aetrix verify that AP2011SL-13 is sourced from the original manufacturer or authorized distributors?
All AP2011SL-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP2011SL-13 meets industry standards.
7.What is the process for return or replacement of AP2011SL-13?
All AP2011SL-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP2011SL-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP2011SL-13 part is unused and in its original packaging.
Return procedure for AP2011SL-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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